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Gas Pressure Regulator RMG 322

General Description

322.00 edition 03/2003

Serving the Gas Industry - WORLDWIDE

Gas Pressure Regulator RMG 322 Application • for gas supply in the community grid, in workshops and industrial plants • for natural gas and all non-corrosive gaseous media

Characteristics • large inlet pressure range • can be provided with various valve sizes to improve rangeability • valve inlet pressure compensation • easy maintenance due to interchangeable cartridge assemblies (plug-in system) • special versions for differential pressure regulation and as zero governor

1.Technical Data Max. inlet pressure pemax

20 bar

outlet pressure range

Wh 0,01 bar to 15 bar

sizes

DN 25 to DN 100

connections

DIN-flanges PN 16 acc. to DIN 2501 and flanges acc. to ANSI 150 RF

accuracy class (AC) and lock up pressure class (SG)

AC ≥ 1

lock-up pressure zone

SZ 2,5

material

valve body diapgragm case internal parts diaphragms, gaskets pilot

ambient temperature range class 2

- 20 °C to + 60 °C

function and strength

acc. to EN 334

PED / CE; DIN- DVGW

approved

2

SG ≥ 5

cast steel, ductile iron (DN 80 and DN 100) sheet steel aluminium, brass, steel synthetic rubber aluminium, brass, steel

Gas Pressure Regulator RMG 322 outlet pressure range pilot

load limiting unit

control unit

specific pressure spring range Wa in wire-dia. [bar] [mm]

RMG 610 (RS 10d)

RMG 650

measuring unit "M"

loading pressure unit automatic loading pressure unit

pilot type

0,1 to 1,5

3,3

measuring unit "N"

0,5 to 5

4,7

measuring unit "M"

1 to 16

8 RMG 650

1 to 10 above pa

5

specific outlet pressure range Wa in [bar]

spring wire-dia. [mm] colour

No.

0,010 - 0,040 0,020 - 0,060 0,040 - 0,120 0,080 - 0,200 0,100 - 0,500

2,5 3,0 3,5 4,0 5,0

white yellow green red blue

1 2 3 4 5

0,1 - 1,5 0,2 - 2,5 0,3 - 3,5

3,3 4,0 4,5

green blue brown

6 7 8

1- 5 2 - 10 5 - 15

5,6 6,3 7,0

yellow brown red

9 10 11

valve date size

valve seat-dia. in mm

KG-value in m3/h for natural gas Ď n=0,83 kg/m3

max inlet pressure pemax*) in bar for actuator size 1 size 2

DN 25

20 33

220 480

DN 50

25 31 41 50

400 800 1300 1600

16 16 16 16

25 31 41 50 60 80

400 900 1500 1800 2700 4000

16 16 16 16 10 (16) 6 (12)

25 31 41 50 60 80 100

400 850 1400 1750 3000 4500 5800

16 16 16 16 10 (16) 6 (12) 4 (8)

DN 80

DN 100

16 16

length A in mm

184

254

298

352

**) The limitation of the inlet pressure range ∆ pe for a diaphragm assembly is not given for reasons of material strenght but in the interest of maintaining the regulating accuracy. The inlet pressure deviations though may not exceed the limit of the valve´s nominal pressure rating.

3

Gas Pressure Regulator RMG 322 3. Design and function This gas pressure regulator was designed to keep the outlet pressure of a gaseous medium constant in the mains and independent of disturbing influences like inlet pressure and/or flowrate changes.

The RMG 322 consists of a main valve with diaphragm assembly, and a pilot with preceeding fine filter. For regular maintenance the integral parts of the main control element and the actuator can easily be taken out of the body and subjected to a visual inspection. In case of failure the modules can be replaced by spare units, and the repair works can be carried out in the workshop without having to shut down thesystem.

The main control element of the main valve is provided with an inlet pressure compensating diaphragm and can be equipped with orifices and actuators of various sizes.

The outlet pressure is controlled by a pilot with adjustable load limitor. The pressure differential between inlet pressure pe and outlet pressure pa serves as auxiliary energy to actuate the main valve control element via the diaphragm assembly. Optimal regulating stability can be reached by adjusting the load limiting pressure to adapt the regulator to particular site conditions.

The outlet pressure to be controlled is fed to the pilot through the measuring line. The measuring diaphragm takes up the actually prevailing outlet pressure and compares it to the pre-adjusted setpoint value given by the setpoint spring. Any deviation of the outlet pressure from the setpoint will cause a corresponding change of the loading pressure fed to the actuator, which controls the position of the valve plate. The resulting change in flowrate will re-adjust the outlet pressure to the setpoint.

Via the return line the outlet pressure is also supplied to the underside of the actuator diaphragm, giving a direct influence upon the position of the valve plate and enabling fast regulation by the main valve.

The regulator gives tight shut-off on zero flow.

4

Gas Pressure Regulator RMG 322

control unit

pilot RMG 610

setpoint spring

vent line

measuring diaphragm

measuring line bleed line loading pressure line

bleed valve vent line

load limiting unit actuator

return line

Filter RMG 905 compensating diaphragm valve plate main valve body

main valve

inlet pressure outlet pressure load limiting pressure loading pressure atmosphere

5

Gas Pressure Regulator RMG 322 2. Dimensions

B

C

E

D

F

A

size

main

actuator

valve body

size 1

size 2

A

B

C

D

E

F

C

D

E

F

DN 25

184

60

265

285

370

300

340

360

430

400

DN 50

254

90

410

430

560

400

DN 80

298

DN 100

352

130

size

dimensions of connection lines pilot

actuator

measuring

bleed

line

line

6

size 1

connection for

size 2

pilot vent lines

pipe12 x 1,5

DN 25 DN 50

pipe

pipe

DN 80

12 x 1,5

12 x 1,5

DN 100

return line

pipe 16 x 2

16 x 1,5

Gas Pressure Regulator RMG 322 4. Ordering details (examle) RMG 322

type

25

- 20 /

1

20 33 25 31 41 50 25 31 41 50 60 80 25 31 41 50 60 80 100

1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2

/

1

/ So

RMG 332

size DN 25 DN 50 DN 80 DN 100

25 50 80 100

valve seat diameter and actuator size DN 25

DN 50

DN 80

DN 100

pilot type

version

RMG 610

MN

0,010 - 0,040 0,020 - 0,060 0,040 - 0,120 0,080 - 0,200 0,100 - 0,500

1 2 3 4 5

RMG 610

MM

0,1 - 1,5 0,2 - 2,5 0,3 - 3,5

6 7 8

1- 5 2 - 10 5 - 15

9 10 11

RMG 650

special version

outlet pressure range Wa in bar

So

7

We supply you with products for gas pressure regulation: RMG REGEL + MESSTECHNIK GMBH Osterholzstrasse 45, D-34123 Kassel, Germany Telephone (++49) 561 5007-0 • Fax (++49) 561 5007-107 gas pressure regulators and safety devices

RMG-GASELAN Regel + Meßtechnik GmbH Julius-Pintsch-Ring 3, D-15517 Fürstenwalde, Germany Telephone (++49) 3361 356-60 • Fax (++49) 3361 356-836 gas pressure regulating equipment, displacement meters, complete stations

Bryan Donkin RMG Gas Controls Ltd. Enterprise Drive, Holmewood, Chesterfield S42 5UZ, England Telephone (++44) 1246 501-501 • Fax (++44) 1246 501-500 gas pressure regulating equipment, below ground gas control modules

Bryan Donkin RMG Co. of Canada Ltd. 50 Clarke Street South, Woodstock, Ontario N4S 7Y5, Canada Telephone (++1) 519 5398531 • Fax (++1) 519 5373339 domestic regulators and safety devices

The other RMG Companies: RMG Messtechnik GmbH Otto-Hahn-Strasse 5, D-35510 Butzbach, Germany Telephone (++49) 6033 897-0 • Fax (++49) 6033 897-130 turbine meters, vortex meters, correctors, flow computers, odorizers

Karl Wieser GmbH Anzinger Strasse 14, D-85560 Ebersberg, Germany Telephone (++49) 8092 2097-0 • Fax (++49) 8092 2097-10

Beindersheim branch Heinrich-Lanz-Strasse 9, D-67259 Beindersheim, Germany Telephone (++49) 6233 3762-0 • Fax (++49) 6233 3762-40 data logging, monitor systems, danger alarm systems

WÄGA Wärme-Gastechnik GmbH Osterholzstrasse 45, D-34123 Kassel, Germany Telephone (++49) 561 5007-0 • Fax (++49) 561 5007-207 design and assembly of gas pressure regulating and metering stations

The RMG Group of Companies on the internet: http://www.rmg.de

Serving the Gas Industry - WORLDWIDE

We reserve the right for technical changes